A flexible circuit board and a laptop computer

Abstract

This utility model relates to the field of laptop computer technology, and more particularly to a flexible circuit board and a laptop computer. The flexible circuit board includes a flexible circuit board body, which has corners formed due to width variations; edge anti-crack strips are provided at the corners, and the edge anti-crack strips are formed in a wavy shape. This flexible circuit board and laptop computer can solve the problem that the rounded corner areas of the flexible circuit boards in existing laptop computers are prone to tearing.

Description

Technical Field

[0001] This application relates to the field of notebook computer technology, and in particular to a flexible circuit board and a notebook computer. Background Technology

[0002] Currently, while pursuing thinner and lighter products, the laptop industry also needs to take into account factors such as appearance design and cost control, which places higher demands on the bending strength of the edges of flexible circuit boards.

[0003] The flexible circuit boards currently on the market generally adopt a rounded corner structure design, that is, a rounded chamfer is set at the corner where the width of the flexible circuit board changes. The main purpose is to reduce the stress concentration effect generated in the edge area when subjected to force, thereby preventing the flexible circuit board from tearing during bending operations or during the assembly of the whole machine by inserting printed circuit boards.

[0004] However, in practical applications, even if the flexible circuit board adopts a rounded corner design, the rounded corner area is still prone to bending or twisting deformation during bending operations or insertion of printed circuit boards for assembly. This leads to stress concentration in the rounded corner area of ​​the flexible circuit board, ultimately causing tearing and affecting the normal use of the product. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a flexible circuit board and a laptop computer to solve the problem that the rounded corner areas of the flexible circuit boards of existing laptop computers are prone to tearing.

[0006] According to a first aspect of the present invention, a flexible circuit board is provided, wherein the flexible circuit board includes: a flexible circuit board body, the flexible circuit board body having corners formed due to width variations; and edge anti-crack strips disposed at the corners, the edge anti-crack strips being wavy in shape.

[0007] Preferably, the edge anti-crack lines extend along the edge of the flexible circuit board body.

[0008] Preferably, the edge crack arrester comprises a number of consecutive peaks and troughs.

[0009] Preferably, the number of wave peaks in the edge anti-crack pattern is not less than three.

[0010] Preferably, the waveform of the edge crack arrestor is a simple harmonic wave.

[0011] Preferably, the wavelength of the edge crack arrester is λmm, where 1mm≤λ≤3mm.

[0012] Preferably, the amplitude of the edge crack arrester is A mm, where 0.1 mm ≤ A ≤ 0.3 mm.

[0013] Preferably, the length of the corner of the flexible circuit board body is greater than 3mm.

[0014] Preferably, the edge anti-crack pattern does not extend beyond a preset configuration of the edge of the flexible circuit board body.

[0015] According to a second aspect of the present invention, a notebook computer is provided, wherein the notebook computer includes a flexible circuit board as described above.

[0016] The flexible circuit board and laptop computer of this utility model embodiment have corners formed by the width variation of the flexible circuit board body. Edge crack prevention grooves are set at the corners to replace the original rounded corner structure. The edge crack prevention grooves are formed in a wavy shape, which can effectively reduce stress concentration and reduce the twisting and tearing of the edge of the flexible circuit board body caused by bending, pulling and other actions, thereby effectively solving the problem that the rounded corner area of ​​the flexible circuit board of existing laptop computers is prone to tearing.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the flexible circuit board according to the present invention.

[0020] Figure 2 This is a partial enlarged view of the flexible circuit board according to this utility model.

[0021] Figure reference numerals: 1-Flexible circuit board body; 10-Corner; 2-Edge crack prevention; 21-Crest; 22-Trough. Detailed Implementation

[0022] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0023] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0024] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0025] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0026] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0027] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0028] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0030] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0031] like Figure 1 and Figure 2 As shown, a flexible circuit board is provided according to a first aspect of the present invention. The flexible circuit board includes a flexible circuit board body 1 and edge anti-crack grooves 2.

[0032] In the following description, reference will be made to Figure 1 and Figure 2 The specific structure of the above-mentioned components of the flexible circuit board and the connection relationship of the above-mentioned components are described in detail.

[0033] like Figure 1 and Figure 2As shown, in this embodiment, a flexible circuit board is provided inside the laptop computer. During the assembly of the laptop computer, the flexible circuit board may be bent or require insertion into printed circuit boards. In this case, stress concentration may occur at the corners 10 (i.e., rounded corner areas) of the flexible circuit board. The flexible circuit board is used to prevent tearing at its edges. Specifically, corners 10 formed due to width variations can be formed on the flexible circuit board body 1 (corners 10 can be formed at the junction of a wider and narrower portion of the flexible circuit board body 1, or at the junction of one side of the flexible circuit board body 1 with another side of different slope). The corners 10 can be recessed inwards from the flexible circuit board body 1. In this case, stress concentration is likely to occur at the corners 10. To prevent tearing at the corners 10 due to bending or pulling of the flexible circuit board body 1, edge anti-crack grooves 2 can be provided at the corners 10 of the flexible circuit board body 1, replacing the original rounded corner structure. The edge crack arrester 2 can be formed in a wavy shape. The wavy design can effectively disperse concentrated stress, allowing the stress to be distributed over a wider area, thereby reducing stress concentration at specific points. This dispersion effect helps to mitigate localized damage and fatigue failure caused by stress concentration. In this way, stress concentration is effectively reduced, and the twisting and tearing of the edges of the flexible circuit board body 1 caused by bending, pulling, and other actions are reduced, thus preventing the edges of the flexible circuit board body 1 from tearing.

[0034] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the edge crack arrestor 2 can extend along the edge of the flexible circuit board body 1. That is, the edge crack arrestor 2 can be formed at the edge of the flexible circuit board body 1, and the overall extension path of the edge crack arrestor 2 is the same as the original extension path of the edge of the flexible circuit board body 1. This arrangement can prevent the edge crack arrestor 2 from excessively encroaching on the structure of the flexible circuit board body 1.

[0035] Preferred, such as Figure 1 and Figure 2As shown, in this embodiment, the edge crack arrester 2 may include several continuous peaks 21 and troughs 22. Specifically, the edge crack arrester 2 can be a continuous waveform. Any two adjacent peaks 21 and troughs 22 of the edge crack arrester 2 can have a rounded transition, thereby preventing stress concentration in the flexible circuit board body 1 at the edge crack arrester 2. Furthermore, the amplitudes of the several peaks 21 and troughs 22 in the edge crack arrester 2 can be different; that is, the edge crack arrester 2 can be an irregular waveform, which may include multiple waveforms with the same wavelength but different amplitudes; or multiple waveforms with the same amplitude but different wavelengths; or multiple connected waveforms with different amplitudes and wavelengths, as long as the edge crack arrester 2 can achieve the function of preventing stress concentration. By reasonably setting multiple interconnected waveform structures, the edge crack arrester 2 can reasonably optimize the stress distribution at the corner 10 of the flexible circuit board body 1, making the stress more evenly distributed at the edge of the flexible circuit board body 1, thereby reducing the risk of local damage caused by stress concentration.

[0036] Furthermore, preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the number of peaks 21 in the edge crack arrester 2 can be no less than three. To ensure that the edge crack arrester 2 can reduce stress concentration, the edge crack arrester 2 should have a sufficient number of peaks 21 (peaks 21 sandwiched between two troughs 22) to avoid insufficient waveform structure in the edge crack arrester 2, which would cause stress concentration at the edge crack arrester 2 on the flexible circuit board body 1. If there are too few waveform structures in the edge crack arrester 2, the stress at the corner 10 of the flexible circuit board body 1 will be concentrated at the few peaks 21 and troughs 22 of the edge crack arrester 2 when the flexible circuit board body 1 is bent or stretched. When the number of peaks 21 in the edge crack arrester 2 is less than three, it is difficult to effectively disperse the stress with only a few peaks 21 and troughs 22, causing the edge of the flexible circuit board body 1 to still undergo deformation such as twisting or tearing, ultimately leading to tearing of the edge of the flexible circuit board body 1.

[0037] Further optimized, such as Figure 1 and Figure 2As shown, in this embodiment, the waveform of the edge crack arrester 2 can be a simple harmonic wave, that is, the edge crack arrester 2 can be a sine wave or a cosine wave. This configuration allows the peaks 21 and troughs 22 on the edge of the flexible circuit board body 1 to be arranged regularly. A regular waveform can more effectively disperse concentrated stress, thereby reducing stress concentration at specific points and avoiding localized damage and fatigue failure caused by stress concentration. Simultaneously, setting the waveform of the edge crack arrester 2 to a simple harmonic wave can also increase the flexibility of the structure, allowing the flexible circuit board body 1 to undergo greater deformation under stress, thereby absorbing more energy and reducing stress peaks. This results in higher toughness and durability of the flexible circuit board body 1 and a more aesthetically pleasing appearance.

[0038] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the wavelength of the edge crack arrestor 2 can be λ, where 1mm ≤ λ ≤ 3mm, and the amplitude of the edge crack arrestor 2 can be A, where 0.1mm ≤ A ≤ 0.3mm. With this configuration, the edge crack arrestor 2 can possess high structural strength, further preventing tearing at the edge of the flexible circuit board body 1. Specifically, when the wavelength of the edge crack arrestor 2 is 1mm to 3mm and the amplitude of the edge crack arrestor 2 is 0.1mm to 0.3mm, the smoothness of the curve in the edge crack arrestor 2 can be ensured, avoiding excessively small waveforms that would result in a sawtooth-like structure in the edge crack arrestor 2. A reasonable waveform structure for the edge crack arrestor 2 can greatly optimize the stress distribution at the edge of the flexible circuit board body 1, making the stress distribution more uniform at the corner 10 of the flexible circuit board body 1, thereby preventing tearing at the edge of the flexible circuit board body 1.

[0039] Further optimized, such as Figure 1 and Figure 2 As shown, in this embodiment, the length of the corner 10 of the flexible circuit board body 1 (i.e., the length of the original rounded corner area of ​​the flexible circuit board) can be greater than 3mm to avoid the overall length of the edge crack arrestor 2 being too short, which would prevent the edge crack arrestor 2 from properly functioning to reduce stress concentration. If the length of the corner 10 of the flexible circuit board body 1 is too short, it will be difficult to set the number of peaks 21 and troughs 22 in the edge crack arrestor 2 to meet the structural strength requirements. At the same time, the length of the corner 10 of the flexible circuit board body 1 being too short will also make it difficult for the edge crack arrestor 2 to meet the requirements of wavelength of 1mm to 3mm and amplitude of 0.1mm to 0.3mm. Ultimately, although the flexible circuit board body 1 is equipped with the edge crack arrestor 2, stress concentration will still occur at the corner 10, causing the edge of the flexible circuit board body 1 to tear.

[0040] In addition, preferred, such as Figure 1 and Figure 2As shown, in this embodiment, the edge crack arrestor 2 can be a preset configuration (the original design configuration of the flexible circuit board body 1) that does not extend beyond the edge of the flexible circuit board body 1. That is, the edge crack arrestor 2 can be a recess formed inside the flexible circuit board body 1, so that the edge crack arrestor 2 does not extend beyond the original design edge of the flexible circuit board body 1. This avoids interference between the edge crack arrestor 2 and other structures in the laptop computer, and makes the shape of the flexible circuit board body 1 more aesthetically pleasing. On the other hand, designing the edge crack arrestor 2 as a recess formed inside the flexible circuit board body 1 can also reduce the use of materials, requiring only cutting on the original design, thus saving production costs to a certain extent.

[0041] In addition, such as Figure 1 and Figure 2 As shown, according to a second aspect of the present invention, a notebook computer is provided, the notebook computer including the flexible circuit board as described above.

[0042] During use, a flexible circuit board is installed inside the laptop. During the assembly of the laptop, the flexible circuit board may be bent or require insertion into printed circuit boards. At this time, stress concentration may occur at the corners 10 of the flexible circuit board. The flexible circuit board is used to prevent tearing at its edges. Specifically, corners 10 formed on the main body 1 of the flexible circuit board due to width variations (corner 10 can be a corner formed at the junction of a wider and narrower portion of the main body 1 of the flexible circuit board, or at the junction of one side of the main body 1 of the flexible circuit board with another side of different slopes) can be recessed into the interior of the main body 1 of the flexible circuit board. In this case, stress concentration is prone to occur at the corners 10.

[0043] A single flexible circuit board can have multiple corners 10 or only one corner 10. Therefore, a laptop computer can have multiple flexible circuit boards or only one flexible circuit board. Specifically, in... Figure 1In the illustrated embodiment, only one edge crack arrestor 2 is provided in the flexible circuit board body 1 to facilitate the illustration of the corner 10 structure. However, this is not a limitation. In actual production, to prevent tearing of each corner 10 due to bending or pulling of the flexible circuit board body 1, the flexible circuit board body 1 can be provided with edge crack arrestors 2 at all corners 10 to replace the original rounded corner structure. The edge crack arrestor 2 is formed in a wavy shape. The wavy design can effectively disperse concentrated stress, allowing the stress to be distributed over a wider area, thereby reducing stress concentration at specific points. This dispersion effect helps to mitigate local damage and fatigue failure caused by stress concentration. In this way, stress concentration is effectively reduced, and the twisting and tearing of the edges of the flexible circuit board body 1 caused by bending, pulling, and other actions are reduced, thus preventing tearing of the edges of the flexible circuit board body 1.

[0044] When the wavelength of the edge crack arrester 2 is set to 1mm to 3mm and the amplitude of the edge crack arrester 2 is set to 0.1mm to 0.3mm, the smoothness of the curve in the edge crack arrester 2 can be guaranteed, avoiding excessively small waveforms that would result in a sawtooth-like structure in the edge crack arrester 2. Thus, by rationally setting the waveform structure of the edge crack arrester 2, the stress distribution at the edge of the flexible circuit board body 1 is greatly optimized, making the stress distribution more uniform at the corner 10 of the flexible circuit board body 1, and preventing tearing at the edge of the flexible circuit board body 1.

[0045] Finally, it should be noted that the above embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A flexible circuit board, characterized in that, The flexible circuit board includes: A flexible circuit board body, wherein the flexible circuit board body has corners formed due to changes in width; An edge crack stopper is provided at the corner, and the edge crack stopper is formed in a wavy shape.

2. The flexible circuit board according to claim 1, characterized in that, The edge anti-crack lines extend along the edge of the flexible circuit board body.

3. The flexible circuit board according to claim 2, characterized in that, The edge crack arrester consists of several consecutive peaks and troughs.

4. The flexible circuit board according to claim 3, characterized in that, The number of wave peaks in the edge anti-crack pattern shall not be less than three.

5. The flexible circuit board according to claim 3, characterized in that, The waveform of the edge crack arrestor is a simple harmonic wave.

6. The flexible circuit board according to claim 5, characterized in that, The wavelength of the edge crack arrester is λ, where 1mm ≤ λ ≤ 3mm.

7. The flexible circuit board according to claim 5, characterized in that, The amplitude of the edge crack arrester is A mm, where 0.1 mm ≤ A ≤ 0.3 mm.

8. The flexible circuit board according to any one of claims 1 to 7, characterized in that, The length of the corner of the flexible circuit board body is greater than 3mm.

9. The flexible circuit board according to any one of claims 1 to 7, characterized in that, The edge anti-crack pattern does not extend beyond the predetermined configuration of the edge of the flexible circuit board body.

10. A laptop computer, characterized in that, The laptop computer includes the flexible circuit board according to any one of claims 1 to 9.

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